内蒙古中部地区中新元古代黑色岩系中的金矿床及找矿远景

Gold Deposits and Ore-prospecting Future of Mesoproterozoic—Neoproterozoic Black Rock Series in Central Areas in Inner Mongolia

摘要:

内蒙古中部地区中—新元古代黑色岩系发育，形成于渣尔泰白云鄂博裂陷槽内，命名为渣尔泰群和白云鄂博群。目前，仅在白云鄂博群的黑色岩系中发现并勘查了一批原生金矿。矿石主要类型为细脉型和蚀变变质岩型。金矿受层位和构造破碎带控制，金平均品位低，可形成大型或超大型矿床。因此，内蒙古中部中—新元古代黑色岩系中金矿资源潜力大，找矿远景好。

Abstract:

Mesoproterozoic—Neoproterozoic black rock series developed well in central areas of Inner Mongolia. They were formed in Zhaertai-Baiyune'bo rift trough and named as Zhaertai groups and Bayune'bo group. Currently, a number of native gold deposits are discovered and explored only in the black rock series in Bayune'bo group. Main types of ores are veinlet type and altered metamorphic type. Gold deposits are controlled by layers and tectonic fracture zones with low average grade. They can form large or very large type deposits. Thus, there are large gold resource potentiality and prospecting future in Mesoproterozoic—Neoproterozoic black rock series in central areas in Inner Mongolia.